Ah, sorry, my mistake. I've got the paper version that stops at Fox Chamber, which states that was drawn by John, so I assumed he'd compiled the full one too.
In terms of predictability, the main significant change since last time this work was done is that Longcliffe Mine wasn't open, and we've found enough significant natural along the vein line in there to surmise that this vein-cavity development may carry on further east - and at depth, below Cowlow Nick and the Speedwell Vent. The Halfway House series is cavernous enough, and it's likely there was more of that between it and WHC before Winnats Pass was cut down. The dye trace we did a couple of years ago from Longcliffe was incredibly fast, in terms of reaching the resurgences - about a third of the time it takes from the Bottomless Pit, though admittedly that probably doesn't join the main streamway water either. My hope is that we get two main pulses of dye - one relatively fast, via our hypothetical 'new' streamway, and then a slower, longer pulse from the main Speedwell streamway. Though I'm also secretly hoping that it doesn't come out at Whirlpool Rising at all.
The swallow in Son of Longcliffe, halfway between Cowlow Nick and Longcliffe Mine was tested and again, was very fast to the resurgences. We also tested the surface-sink on Cowlow Nick itself in wet weather, near the outcrop of Longcliffe Vein, and that only came out of Peakshole Sough, but via the pressured rising in the floor near the entrance - and started arriving in nine hours. Again, strongly suggestive of a vadose streamway.
The empty space north of the main Peak-Speedwell system before the shale boundary (in plan) is large enough to hold another system of equivalent size, albeit with some volume lost due to the hill slope. The top of Longcliffe shaft is more or less level with the White River Series, so that could be another of the large avens seen in there, initiated this time as a swallet on the vein where the bedding plane topped it out as the shale cover retreated. There's a few holes I've found that fit the bill for that theory, but it would make a hell of a mess digging them out.